CN208059636U - Heat exchanger and fused salt steam generator including at least one train of heat exchangers - Google Patents
Heat exchanger and fused salt steam generator including at least one train of heat exchangers Download PDFInfo
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- CN208059636U CN208059636U CN201721813845.8U CN201721813845U CN208059636U CN 208059636 U CN208059636 U CN 208059636U CN 201721813845 U CN201721813845 U CN 201721813845U CN 208059636 U CN208059636 U CN 208059636U
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Abstract
The utility model is related to a kind of heat exchanger and the fused salt steam generator including at least one train of heat exchangers.Wherein parallel U-bend is restrained is connected to first end and second end portion via attachment device, first fluid is distributed to the pipe of the first straight section in first end the first hemispherical housing and reaches second end, in second end the second hemispherical housing first fluid is collected from the pipe of second straight portion section, each attachment device is made of tube sheet, tubesheet calculation is at the pressure difference between the high pressure of the first fluid in the second fluid flowing pressure and corresponding housing in shell-space in resistance, the circular slab that tube sheet includes has central circular eyelet, tube sheet further includes the hemispherical shell for being located on eyelet and being tightly connected to circular slab, to form physical separation between first fluid and second fluid.The utility model is intended to the shortcomings that overcoming the heat exchanger for steam generator of the prior art, obtains the heat exchanger that the size with high flexibility reduces in terms of thermal gradient and improved efficiency.
Description
Technical field
The utility model is related to field of heat exchangers, it is notably intended to the hot-fluid for focusing-type solar energy power station (CSP)
Such as evaporator, superheater, reheater in body steam generator (such as fused salt steam generator (MSSG)) and/or energy saving
The heat exchanger of device and/or preheater.
Background technology
Known focusing-type solar energy tower power station generally includes one or more solar receivers, and the solar energy receives
Device is located at the tower top of center.These solar receivers are by concentrating incident sunlight to heat, and they generate the fluid of heat,
The fluid of the heat will be further used in the high steam for generating and capable of driving turbine and producing electric energy.
More specifically, focusing-type solar energy tower power station has at least one heliostat solar energy as critical piece
Field, the solar receiver mounted on top of tower, steam generator, steam turbine and storage system.In fused salt technology, melt
Salt is usually heated to 565 DEG C in solar receiver, and is stored in the storage tank of heat.When needs produce electricl energy
When, hot salt flows to fused salt steam generator (MSSG) from hot tank will be by the steam of injection steam turbine with generation.
Fig. 1 diagrammatically illustrates each component of the commonly referred train of heat exchangers for MSSG.Salt is heated from entrance 100
Reheater 101 (or preheater of with or without reheater) and superheater 104 are flowed through to enter evaporator
102.Hereafter, hot salt flow to energy-saving appliance 103 from the outlet of evaporator 102 and flows further to outlet 105.
" shell-and-tube " formula heat exchanger so-called in the prior art is related to a kind of design of heat exchanger suitable for higher pressure application.
Such heat exchanger (is referred to as " shell ") structure by the big pressure vessel with one group of pipe (being referred to as " beam ") in it
At.First fluid is advanced by pipe, and second fluid flows on pipe in shell, and first fluid and second fluid have difference
Temperature, it is intended to from second fluid to first fluid conduct heat, or from first fluid to second fluid conduct heat.
Design about shell and pipe is there are many modification.For example, Fig. 2 diagrammatically illustrates straight tube type heat exchanger, (the two exists
Pipe side process).The end of each pipe 21 is connected to water tank by the hole in the plate (being referred to as " tube sheet ") 27 of separation is arranged
Or pumping chamber 29.Pipe 21 can be straight (as shown in Figure 2), or with (U-tube) of U-bend song.
In order to provide improved heat exchange between two fluids, the flow path of second fluid usually passes through middle baffle plate
28 determine that the baffle forms corresponding access, so that second fluid stream changes when leading to next access from an access
Its direction.Baffle is typically the form of the ring and disk of part-circular section or annular, and the longitudinal axis perpendicular to shell 22 is pacified
Dress flows in order to provide the zigzag of second fluid.
The alternate design in the prior art for the above-mentioned design being shown in FIG. 3 is horizontal hairpin heat exchanger.
Hairpin heat exchanger 1 has two shells 22 of the straight part comprising U-tube.The head of hairpin heat exchanger includes
180 ° of U-bend bent portions of pipe.The advantages of back bending shell-and-tube designs is as follows：
Connector expansion system is not needed, is coped with naturally by the design of back bending shell-and-tube because thermally expanding；
Straight tube due to heat exchanger and horizontal position, the discharge and excretion of heat exchanger are easier.
The design of different steam generators is there is known.The synthesis of these different designs reports 93- in Holy Land Asia
It is reported in 7084 " investigation of heat accumulation and steam generator problem, Bei Tai engineering companies ", wherein listing existing steaming
The advantages of vapour generator and disadvantage.
The efficiency transmitted for the heat improved in heat exchanger, it is known that since generation nineteen twenty, install gear in the housing
Plate can have the specific shape for guiding fluid in spiral path.In addition, in the case of continuous spiral baffle,
Compared with traditional segmental baffle, identical shell lateral pressure is dropped, heet transfer rate increases about 10%, and (heat transmits periodical
(J.Heat Transfer) (2007), the 129th (10) volume, 1425-1431).The pattern, which allows to reduce, is happened at segmental baffle
In leakage stream, and further greatly increase heat transfer coefficient (heat transmit periodical (J.Heat Transfer) (2010),
132nd (10) are rolled up, and 101801).Equally, layering and the stagnant areas (according to calculate) of stream are avoided, this allow discharge completely and
Reduce easy incrustation (smaller dirtiness resistance and smaller heat transfer area).
Document WO 2009/148822 discloses the baffle of installation in the housing, to guide fluid at spiral flow sample
Formula, when baffle is respectively close to entrance and exit with different helical angles.Document US 2,384,714, US 2,693,942,
US 3,400,758, US 4,493,368 and WO 2005/019758 disclose each different types of baffle, but all have
It is provided with the identical purpose of the helical flow pattern of fluid.Document US 1,782,409 discloses continuous spiral baffle.
2 020 793 A of document GB disclose counterflow heat transfer device (counterflow heat exchanger), especially
It is steam generator, there are two fixed tube sheet, i.e. upper perforated plate and lower perforated plate, the two tube sheets to be arranged to each other with parallel for tool
And coaxial relationship faces, and the different average diameters with opening area, a set of pipe is in the upper perforated plate and lower perforated plate
Between extend, the pipe is connected to the tube sheet and is distributed substantially with polar-symmetric arrangement, and at one end
With S sigmoids part, the straight line portion of a set of pipe of heat exchange area is consisted essentially of to be substantially evenly distributed envelope
It closes and is being attached in the ring-shaped inner part space limited between the inner sheath of tube sheet and outer shield.In use, heat fluid (such as
Liquid Sodium) by the annular space to heat the fluid flowed in pipe.
Current solution for example the flexibility of thermal gradient, efficiency (pressure drop, heat transfer coefficient), emission performance, from
It is unsatisfactory so to recycle, avoid corroding and leaking etc., and newly-designed steam generator and/or its each change
Hot device should meet following technical need, such as：
There is the improved thermal efficiency by reducing internal leakage and bypass stream；
There is improved pressure drop by reducing by local flow hinders；
Improved hoisting power；
Improved reliability；
Improved incrustation performance, etc..
Leakage is typically resulted in addition, quickly starting, the junction especially between pipe and tube sheet.
Utility model content
The utility model is intended to the shortcomings that overcoming the heat exchanger for steam generator of the prior art.
In particular, the utility model is intended to obtain the ruler with high flexibility in terms of thermal gradient and improved efficiency
The heat exchanger of very little reduction, the improved efficiency be derived from cause low pressure drop best fluid dynamic salt stream, it is lower in
Portion's leakage (bypass), improved heat transfer coefficient, lower incrustation trend, being easily discharged of fused salt, Natural Circulation (is not followed
Ring pumps), long service life and competitive price.
The first aspect of the utility model is related to a kind of heat exchanger, and the heat exchanger includes the first straight section, second straight portion
The bent section or ancon of section and connection first straight section and second straight portion section, the first straight section and second straight portion section
In each straight section include the part constituted by cylindrical inner housing and by cylindrical shell body, the cylinder inner housing
It is cooperated with cylindrical shell body to form interior shell-space, the interior shell-space encapsulates a branch of parallel U-bend, the U-bend
Pipe each all has the first straight part in first straight section and second straight portion section for being located at the heat exchanger and the
Two straight parts and 180 ° of bending parts in the bent section or ancon of the heat exchanger so that in use,
The first fluid that waits being heated and evaporate flows in U-bend, and the cylindrical shell body is equipped at one end respectively
Entrance and another end be equipped with outlet for the second fluid for hot fluid so that in use, described second
Fluid is flowed according to annular flow path in interior shell-space, and by being carried out with the first fluid flowed in U-bend
Heat exchange and cool down, the interior shell-space is also encapsulated with baffle to guide second fluid, wherein a branch of parallel U-bend
Pipe is connected to first end and second end via attachment device, and at the first end, the first hemispherical housing divides first fluid
The U-bend being fitted at the first straight section, at second end, the U of the second hemispherical housing from second straight portion section
The collection of shape bend pipe is in a liquid state, the first fluid of gaseous state or liquid/gaseous form of mixtures, each attachment device by
Tube sheet is made, and the tubesheet calculation is at first in the low pressure and corresponding housing for resisting the second fluid in the interior shell-space
Pressure difference between the high pressure of fluid, wherein the tube sheet includes circular slab, the circular slab has center hole, and wherein institute
It further includes the hemispherical shell for being located on the center hole and being tightly connected to the circular slab to state tube sheet, to make first
Physical separation between fluid and second fluid.
Preferred embodiment according to the present utility model, the hairpin heat exchanger one of also include the following features or
Its combination appropriate：
The wherein thickness of circular slab is bigger than the thickness by ASME standard recommendations for resisting same pressure differential；
Interface wherein between the circular slab of housing and tube sheet is substantially plane, and wherein hemispherical shell court
To heat exchanger internal approach and in cylindrical inner housing；
Wherein the thickness of hemispherical shell is between the 20% and 40% of the round plate thickness of tube sheet；
Wherein described first straight section constitutes the closing of the separation connected by the ancon with the second straight portion section
Part, to form hairpin heat exchanger shell；
Wherein described first straight section, the second straight portion section and the bent section or ancon constitute encapsulation described one
The single closure member or shell of the U-bend of Shu Pinghang, and the wherein described first hemispherical housing and described the second half
Spherical housing is consistent.Preferably the first hemispherical housing and the second hemispherical housing are identical (coincide)；
The wherein described heat exchanger is horizontal, and the stream of second fluid is same relative to the stream of first fluid therein
To (co-current) of stream or (counter-current) of reverse flow；
The wherein described first fluid is the fluid for including water supply or supercritical carbon dioxide；
The wherein described second fluid is the mixture of fused salt either fused salt, deep fat or Liquid Sodium；
Wherein baffle is in the form of continuous spiral baffle；
The wherein described baffle group is filled to cylindrical inner housing, it is preferable that the baffle welding is bolted to
Cylindrical inner housing；
Sealing device is equipped with wherein between the cylindrical shell body and baffle；
The wherein described heat exchanger equipment has distribution sheath, for being supplied uniformly across second fluid to changing from thermal fluid inlet
Hot device；
The wherein described distribution sheath has the multiple openings being distributed with 360 ° on its inner surface；The opening preferably will
Second fluid is supplied into the first lap of spiral baffle.
The second aspect of the utility model is related to a kind of evaporator made of above-mentioned heat exchanger.
The third aspect of the utility model is related to a kind of superheater made of above-mentioned heat exchanger.
Fourth aspect according to the present utility model, the utility model is related to the reheater made of above-mentioned heat exchanger and/
Or energy-saving appliance and/or preheater.
5th aspect according to the present utility model, it is described the utility model is related to a kind of fused salt steam generator (MSSG)
Fused salt steam generator includes at least one train of heat exchangers, and the train of heat exchangers is by the evaporator, superheater, reheating
Device and/or energy-saving appliance and/or preheater are made.Advantageously, the superheater, reheater and/or energy-saving appliance and/or preheater are
Reverse flow flowing, and the evaporator is concurrent flowing.
Range according to the present utility model, wherein the fused salt steam generator is once-through type or forced circulation type steam
Generator.
Description of the drawings
Fig. 1 schematically shows each portion of the common train of heat exchangers for fused salt steam generator of the prior art
Part.
Fig. 2 schematically shows the straight pipe heat exchangers for being used for " shell-pipe " type according to prior art of the prior art
Embodiment.
Fig. 3 shows the perspective view of the horizontal back bending shell-and-tube generator of the prior art.
Fig. 4 (A) and 4 (B) respectively illustrates the flat of the first preferred embodiment for heat exchanger according to the present utility model
Face figure and front view.
Fig. 5 (A) and 5 (B) respectively illustrates the corresponding viewgraph of cross-section of the heat exchanger of the embodiment according to Fig. 4.
Fig. 6 (A) and 6 (B) respectively illustrates the view of corresponding with Fig. 5 but support system with heat exchanger.
Fig. 7 is a heat exchanger end according to the present utility model, focuses the longitudinal cross-section detail view of specific tube sheet.
Fig. 8 (A) and 8 (B) respectively illustrates the perspective view and section view of above-mentioned specific tube sheet.
Fig. 9 is the incision of the second embodiment of the utility model for showing the evaporator designed with U-tube
3D views.
Figure 10 (A) and 10 (B) shows tube sheet (A) according to prior art and specific tube sheet according to the present utility model
(B) corresponding thermal imaging analogue data.
Specific implementation mode
First preferred embodiment of the utility model is related to being used for horizontal back bending shell-and-tube according to shown in Fig. 4 to 9
The new design of heat exchanger 1.
There are two types of the reversing currents between fluid for heat exchanger tool.First fluid (being typically the mixture of water and steam) passes through
The parallel horizontal straight tube section 2 of the first beam in the first straight part of hairpin heat exchanger and also by being located at back
The parallel horizontal straight tube section 2 of the second beam in the second straight section of bend pipe shell heat exchanger and recycle.The pipe 2 of first beam passes through
180 ° of swan-neck sections in the head of bent back portion or ancon 32 and the pipe 2 for being connected to the second beam, are consequently formed U-bend song
Pipe section.
Supercritical carbon dioxide is the example of available alternative first fluid in the utility model.
According to this embodiment, the tube bank 2 in each straight part be located at cylindrical inner housing 3 and cylindrical shell body 4 it
Between, as shown in fig. 5 and fig..
The inner space 5 limited by two shells 3,4 allows to keep heat source in annular flow path, preferably keeps
Second fluid.The second fluid is hot fluid, such as via the solar energy at the top of focusing-type solar energy tower power station
The fused salt (one or more) of receiver heating.The hot fluid can be transferred heat to by making its stream be contacted with tube bank 2 across pipe
The first fluid of 2 PARALLEL FLOWs advanced.First fluid and second fluid can be concurrent or reverse flow, without departing from this
The range of utility model.Similarly, heat source or second fluid can be water, deep fat, Liquid Sodium, recirculating fluidized bed etc.
Any hot fluid.
As shown in FIG. 4, the at one end in heat exchanger 1 is arranged in the first distribution sheath 30, with inlet nozzle 6 and accordingly
Outlet nozzle 6, hot fluid enters heat exchanger 1 by the inlet nozzle 6, and left and changed by corresponding outlet nozzle 6
Hot device 1.Similarly, outlet nozzle 7 and corresponding inlet nozzle 7 are arranged at the other end of heat exchanger 1 distributes sheath second
On 30, so that the hot fluid cooled down is discharged respectively and hot fluid is made to enter.
Advantageously, hot fluid is uniform with 360 ° due to the distribution sheath 30 at the inlet nozzle of heat exchanger
Ground is distributed on shell (entrance, cycle, fluid temperature (F.T.)).
In order to improve heat transfer efficiency, such as shown in figs. 5 and 6, space 5 is located at the straight part of back bending shell-tube exchanger
In, the straight part of the back bending shell-tube exchanger has the closed continuous helical shape baffle 8 for allowing to guide hot fluid stream.So
Afterwards, hot fluid spirally flows in heat exchanger between the inner hull and the outer hull according to annular flow path, the heat exchanger
The evaporator e.g. run under Natural Circulation.Continuous spiral baffle construction ensures the slowly flowing of second fluid,
Thus avoid any fierce commutation or dead zone as in the exchanger with the baffle vertical with stream.With this
Mode, heat transfer rate greatly improve, and the pressure drop pole compared with the exchanger with traditional section baffle (as described above)
The earth reduces.
According to one embodiment, together with cylindrical inner housing 3 can be welded or be bolted with baffle 8.Separately
Outside, sealing device can be arranged between external shell 4 and baffle 8, to avoid parasitic flow.
Advantageously, spiral baffle is designed for use with the solution (sealing device and manufacture, be not shown) of innovation, so as to
There is minimum gap as far as possible between baffle and pipe.This allow compacting or at least consumingly reduce baffle with by pipe it
Between bypass.
According to the utility model, as being shown in FIG. 7, each outer end in the straight part of hairpin heat exchanger
On, the annular beam of parallel straight tube 2 is connected to (partly) that includes high-pressure fluid (steam/water steam) by specific tube sheet 11,12
Spherical housing 16.Specific tube sheet 11,12 has feature below：
Tube sheet 12 itself is empty, wherein machining eyelet, and eyelet changing corresponding to no pipe 2 in the middle
The extension of the hot straight part of device；
Between fused salt area of low pressure 13 and high pressure water/steam housing region 15 in the straight part of heat exchanger physically
It strictly disjoints (referring to rectangular box) by being soldered to or being closely attached above the eyelet to the spherical watch of tube sheet 12
Face head 11 ensures；
Tube sheet 12 according to ASME (American Society of Mechanical Engineers) specification than usually recommending design in the prior art
It is thick.
According to These characteristics, heat exchanger component cooperation is so that heat exchanger is according to following operation：
Spherical housing (bonnet) 16 distributes first fluid (such as water/steam) towards tube sheet 12；The spherical shape of housing
Shape allows to design relatively thin housing；
Tube sheet 12 divides in the inlet of heat exchanger by first fluid towards 2 distribution of tube bank and in exit from tube bank respectively
With first fluid；
It is improved by continuous spiral baffle 8 of shell-pipe construction under (second fluid) salt annular flow, and
And U-tube design 14 allows the different thermal expansions for coping with pipe.
Such as in typical shell-pipe construction, first fluid (being typically water) is in torispherical container or pumping chamber in height
Pressure.It on the other side of tube sheet, keeps salt around the flowing of tube bank at a much lower pressure, thus needs very thick tube sheet
To resist pressure difference.
The unexpected technique effect or advantage of the utility model be the tube sheet that proposes to describe than in the prior art very
To thicker tube sheet.The surdimensionnement of 12 size of tube sheet helps to reduce its bending stress and reduces creep.In addition, tube sheet
And/or the specific machining of housing allows the amount for reducing invalid metal.
Example
The utility model is flexible and for being applied to a series of design of heat exchanger in MSSG technologies, such as
Reheater, superheater, energy-saving appliance, preheater and evaporator, wherein all common components are according to the utility model
General design of heat exchanger manufacture.
(Fig. 1) as described above there is the hot melt salt for reducing temperature for example parallelly to flow through reheater and superheater first, with
Just it recombines, and into evaporator and further continuously into pre- hot gas/energy-saving appliance.
In the ongoing illustrated embodiment, with such as 563 DEG C of high temperature, (and it is degradation to be definitely less than for common fused salt
650 DEG C of temperature) the hot melt salt that enters in system parallelly flows through superheater and reheater, merges and continuous
Pass through evaporator and preheater.Cold salt using usually in the range of 290-300 DEG C, preferably at about 293 DEG C or higher than as
The temperature of the minimum temperature of the setting temperature (low as 90 DEG C of the fused salt of such as sodio-derivative) of heat transfer fluid is left
Preheater.Alternatively, any hot fluid (such as deep fat) is substituted for fused salt, in this case its for example with from
80 DEG C (condensation and/or crystallization temperature) is to the operation temperature of 380 DEG C (such as degradation temperature).
In addition, under the scope of the utility model, hot fluid can have the temperature until 700 DEG C.All metal parts
Advantageously it is made of stainless steel or the noble metal that can be resisted until 600 DEG C and higher than 600 DEG C.
More specifically, according to one embodiment, the fused salt from reheater and superheater enters evaporation by inlet nozzle
Device, then in evaporator in a manner of Natural Circulation in the annular space inside spin between internal pipeline and outer shield
Ground flows, as described above.The water of saturation passes through downcomer (downcomer) from the dry drum (spherical or level) of evaporator
(not shown) and the U-tube that is flowed in heat exchanger from hemispherical housing are to generate steam.In this design, it is in high pressure
Water flowed in the pipe not contacted with shell.Preferably, all heat exchangers are horizontal.
Although the design of exchanger according to the present utility model is best for natural circulation, can also be used in
In once-through type or forced circulation type steam generator.
An alternative embodiment being shown in FIG. 9 according to the utility model, the straight tube section of first tube bundle and second
The straight tube section of tube bank is made for the single U-tube pipe in single closure member or shell (being formed without back bending shell-and-tube shell)
The inlet/outlet of beam, the single U-tube tube bank of the ancon 32 of U-tube 2 on the side of heat exchanger and on the other side is logical
It crosses tube sheet 11,12 according to the present utility model and is connected to spherical housing 16.
The utility model advantageously provides extra high flexibility due to following characteristics in terms of thermal gradient：
Tube sheet is empty in the middle, to avoid any harmful thermal gradient in tube sheet；It is in the phase of starting running
Between improve the hot property of the component, to the component longer life expectancy (referring to Figure 10 (B), wherein existing in the present invention
Thermal gradient ratio in tube sheet is in the prior art low in Figure 10 (A))；
The specific machining that can be pre-designed between tube sheet 12 and interior conduit 3, so as to avoid peak stress and with
Just the service life of interior conduit component is improved；
The specific machining that can be pre-designed between tube sheet 12 and spherical housing 16 (not having flange)；
Spherical housing 16 has been chosen to head or end piece, to avoid appointing during the beginning of installation
What cooled region；
Water in high pressure flows in pipe or pipeline 2, rather than is flowed in shell side 4, this allows its lower
Thickness and therefore higher thermal gradient ability；
Traditional straight baffle is substituted by spiral baffle 8, be related to salt spirally flow and flowing of the water in pipe 2 by
Limit；
Continuous spiral baffle 8 allows the change of stable flow direction.It is and traditional in the case of equivalent Δ P
Baffle is compared, and continuous spiral baffle 8 ensures that higher speed stream, higher exchange surface and smaller heat exchanger are set
Meter.In addition, the risk of incrustation is lower, because in the case of this baffle design, without dead zone.
In addition, according to the utility model, the specific connection of pipe to tube sheet is (for example, the IBW being known in the art is (internal
Weld in hole)) can providing the scheme not corroding and do not reveal, (the not risk of crevice corrosion, does not leak or relaxes
Risk).
Reference numerals list
1 hairpin heat exchanger (hairpin heat exchanger)
2 straight tubes (section)
3 cylindrical inner housings
4 cylindrical shell bodies
Shell-space in 5
6 thermal fluid inlets
7 hot fluid outlet ports
8 spiral baffles
9 first straight sections
10 second straight portion sections
The spherical head of 11 tube sheets
12 thick tube sheets
13 second low-pressure fluids (fused salt)
14 U-bends
15 high-pressure fluids (water/steam)
16 housings (entrance or outlet)
17 pipe accesses
Closure member before 18
19 rear enclosed parts
20 support elements
21 straight tubes
22 shells
23 shell side liquids enter
24 pipe side liquids enter
25 pipe side liquids leave
26 shell side liquids leave
27 tube sheets
28 straight baffles
29 water tanks or balancing gate pit or housing
30 distribution sheaths
32 ancons
33 separating plates
The fused salt entrance of 100 MSSG
The reheater of 101 MSSG
The evaporator of 102 MSSG
The energy-saving appliance of 103 MSSG
The superheater of 104 MSSG
The fused salt of 105 MSSG exports
Claims (22)
1. a kind of heat exchanger (1), which is characterized in that the heat exchanger include the first straight section (9), second straight portion section (10), with
And the bent section or ancon (32) of connection first straight section and second straight portion section, the first straight section (9) and second straight portion
Section (10) in each straight section include by cylindrical inner housing (3) and the part being made of cylindrical shell body (4), it is described
To form interior shell-space (5), the interior shell-space encapsulating is a branch of flat for cylindrical inner housing (3) and cylindrical shell body (4) cooperation
Capable U-bend (2), the U-bend each all have first straight section (9) for being located at the heat exchanger and
The first straight part in two straight sections (10) and second straight section and the bent section or ancon positioned at the heat exchanger
(32) 180 ° of bending parts in so that in use, wait the first fluid flowing in U-bend (2) heated and evaporated,
The cylindrical shell body (4) is equipped with entrance (6) and is equipped with outlet (7) in another end and uses at one end respectively
In the second fluid for hot fluid so that in use, the second fluid is according to annular flow path in interior shell-space (5)
Flowing, and cooled down by carrying out heat exchange with the first fluid flowed in U-bend (2), the interior shell-space (5) is also
Baffle (8) is encapsulated with to guide second fluid, wherein a branch of parallel U-bend (2) is connected to via attachment device
First end and second end, at the first end, first fluid is assigned to the first straight section (9) by the first hemispherical housing (16)
The U-bend (2) at place, at second end, the second hemispherical housing (16) is from the U-bend at second straight portion section (10)
Pipe (2) collect be in a liquid state, the first fluid of gaseous state or liquid and gaseous form of mixtures, each attachment device by
Tube sheet is made, and the tubesheet calculation is at the low pressure and corresponding housing (16) for resisting the second fluid in the interior shell-space (5)
Pressure difference between the high pressure of interior first fluid, wherein the tube sheet includes circular slab (12), during the circular slab (12) has
Heart circular hole, and the wherein described tube sheet further includes being located on the center hole and being tightly connected to the circular slab (12)
Hemispherical shell (11), to make physical separation between first fluid and second fluid.
2. heat exchanger (1) according to claim 1, which is characterized in that the thickness ratio of the circular slab (12) is for resisting
The thickness by ASME standard recommendations of same pressure differential is big.
3. heat exchanger (1) according to claim 1, which is characterized in that between housing (16) and the circular slab (12) of tube sheet
Interface be substantially plane, and wherein hemispherical shell (11) towards heat exchanger (1) internal approach and positioned at circle
In cylindrical inner shell body (3).
4. heat exchanger (1) according to claim 1, which is characterized in that the thickness of hemispherical shell (11) is between the circle
Between the 20% and 40% of shape plate (12) thickness.
5. heat exchanger (1) according to claim 1, which is characterized in that first straight section (9) and the second straight portion
Section (10) constitutes the closure member of the separation connected by the ancon (32), to form hairpin heat exchanger shell.
6. heat exchanger (1) according to claim 1, which is characterized in that first straight section (9), the second straight portion
Section (10) constitutes the single closure member for encapsulating a branch of parallel U-bend (2) with the bent section or ancon (32)
Or shell, and the wherein described first hemispherical housing (16) is consistent with the second hemispherical housing (16).
7. heat exchanger (1) according to claim 1, which is characterized in that the heat exchanger be it is horizontal, and therein
Two fluid streams are concurrent either reverse flows relative to first fluid stream.
8. heat exchanger (1) according to claim 1, which is characterized in that the first fluid be include water supply or overcritical
The fluid of carbon dioxide.
9. heat exchanger (1) according to claim 1, which is characterized in that the second fluid is fused salt either fused salt, heat
The mixture of oil or Liquid Sodium.
10. heat exchanger (1) according to claim 1, which is characterized in that baffle (8) is in the shape of continuous spiral baffle
Formula.
11. heat exchanger (1) according to claim 1, which is characterized in that the baffle (8) is assembled to cylindrical inner housing
(3)。
12. heat exchanger according to claim 1, which is characterized in that the cylindrical shell body (4) and baffle (8) it
Between be equipped with sealing device.
13. heat exchanger according to claim 1, which is characterized in that the heat exchanger equipment has distribution sheath (30), is used for
Second fluid is supplied uniformly across to heat exchanger from thermal fluid inlet.
14. heat exchanger according to claim 13, which is characterized in that the distribution sheath (30) has on its inner surface
The multiple openings being distributed with 360 °.
15. heat exchanger according to claim 11, which is characterized in that baffle (8) welding is bolted
To cylindrical inner housing (3).
16. heat exchanger according to claim 14, which is characterized in that the opening supplies second fluid to spiral
In the first lap of baffle (8).
17. the evaporator made of heat exchanger according to claim 1.
18. the superheater made of heat exchanger according to claim 1.
19. reheater and/or energy-saving appliance and/or preheater made of heat exchanger according to claim 1.
20. a kind of fused salt steam generator, which is characterized in that the fused salt steam generator includes at least one heat exchanger system
Row, the train of heat exchangers by evaporator according to claim 17, superheater according to claim 18 and
Reheater and/or energy-saving appliance and/or preheater according to claim 19 are made.
21. fused salt steam generator according to claim 20, which is characterized in that the superheater, reheater and/or section
Energy device and/or preheater are reverse flow flowings, and the evaporator is concurrent flowing.
22. fused salt steam generator according to claim 20, which is characterized in that the fused salt steam generator is direct current
Type or forced circulation type steam generator.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721813845.8U CN208059636U (en) | 2017-12-22 | 2017-12-22 | Heat exchanger and fused salt steam generator including at least one train of heat exchangers |
| AU2018382368A AU2018382368B2 (en) | 2017-12-11 | 2018-12-05 | Heat exchanger for a molten salt steam generator in a concentrated solar power plant (III) |
| PE2020000480A PE20201354A1 (en) | 2017-12-11 | 2018-12-05 | HEAT EXCHANGER FOR A MELTED SALT VAPOR GENERATOR IN A CONCENTRATED SOLAR POWER PLANT (III) |
| PCT/EP2018/083579 WO2019115306A1 (en) | 2017-12-11 | 2018-12-05 | Heat exchanger for a molten salt steam generator in a concentrated solar power plant (iii) |
| MX2020006067A MX2020006067A (en) | 2017-12-11 | 2018-12-05 | Heat exchanger for a molten salt steam generator in a concentrated solar power plant (iii). |
| US16/767,145 US11454452B2 (en) | 2017-12-11 | 2018-12-05 | Heat exchanger for a molten salt steam generator in a concentrated solar power plant (III) |
| ZA2020/02693A ZA202002693B (en) | 2017-12-11 | 2020-05-12 | Heat exchanger for a molten salt steam generator in a concentrated solar power plant (iii) |
| CL2020001263A CL2020001263A1 (en) | 2017-12-11 | 2020-05-13 | Heat exchanger for a molten salt steam generator in a concentrated solar power plant. |
| IL275080A IL275080B (en) | 2017-12-11 | 2020-06-02 | Heat exchanger for a molten salt steam generator in a concentrated solar power plant (iii) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721813845.8U CN208059636U (en) | 2017-12-22 | 2017-12-22 | Heat exchanger and fused salt steam generator including at least one train of heat exchangers |
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| Publication Number | Publication Date |
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| CN208059636U true CN208059636U (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721813845.8U Active CN208059636U (en) | 2017-12-11 | 2017-12-22 | Heat exchanger and fused salt steam generator including at least one train of heat exchangers |
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| CN (1) | CN208059636U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959275A (en) * | 2017-12-22 | 2019-07-02 | 考克利尔维修工程有限责任公司 | Heat exchanger and fused salt steam generator including at least one train of heat exchangers |
| CN110849200A (en) * | 2019-11-29 | 2020-02-28 | 四川大学 | Supercritical C02Flow guiding structure of pipeline type heat exchanger |
-
2017
- 2017-12-22 CN CN201721813845.8U patent/CN208059636U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959275A (en) * | 2017-12-22 | 2019-07-02 | 考克利尔维修工程有限责任公司 | Heat exchanger and fused salt steam generator including at least one train of heat exchangers |
| CN109959275B (en) * | 2017-12-22 | 2023-03-28 | 考克利尔维修工程有限责任公司 | Heat exchanger and molten salt steam generator comprising at least one heat exchanger series |
| CN110849200A (en) * | 2019-11-29 | 2020-02-28 | 四川大学 | Supercritical C02Flow guiding structure of pipeline type heat exchanger |
| CN110849200B (en) * | 2019-11-29 | 2022-03-15 | 四川大学 | Supercritical C02Flow guiding structure of pipeline type heat exchanger |
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